Practical implementation of a high-frequency current sensing technique for VRM

被引：2
|
作者：
Simon-Muela, A. [1 ,2 ]
Petibon, S. [1 ]
Alonso, C. [1 ]
Estibals, B. [1 ]
Seguier, L. [1 ]
Chaptal, J. L. [2 ]
机构：
[1] Univ Toulouse 3, CNRS, LAAS, F-31062 Toulouse, France
[2] Freescale Semicond, TSO R&D Dept, F-31062 Toulouse, France
来源：
2007 IEEE INTERNATIONAL SYMPOSIUM ON INDUSTRIAL ELECTRONICS, PROCEEDINGS, VOLS 1-8 | 2007年
关键词：
D O I：
10.1109/ISIE.2007.4374693
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Inductor current tracking in high-frequency DC/DC converters is not effortless, especially when high current and low voltages loads are demanded. This paper proposes a simple technique to obtain a good resolution in the inductor current measurement obtaining an equivalent voltage image which can be used for a high-frequency PWM controller. This strategy of measurements is generic and it has been validated by simulations. Our experimental results are obtained with very low output voltages and several loads between 10mA to high currents covering the needs of portable and embedded VRM applications.
引用
收藏
页码：764 / +
页数：2
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